Characterization of topologically close-packed phases and precipitation behavior of P phase in a Ni-based single crystal superalloy - 文章详情页

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摘要：

Scanning　electron　microscopes　(SEM)　and　transmission　electron　microscopes　(TEM)　were　employed　to　investigate　the　topologically　close-packed　(TCP)　phases　in　an　experimental　nickel　base　single　crystal　superalloy.　Orientation　relationships　between　P　phase　and　matrix　were　found　as　(010)(P)//(1　(1)　over　bar1)(gamma)　and　[201](P)//[110](gamma)　in　which　atomic　arrangement　of　P　phase　obtains　the　optimal　matching　with　that　of　gamma/gamma＇　matrix　and　the　semi-coherent　interface　forms,　achieving　the　lower　interface　energy.　The　elemental　composition,　atomic　arrangement　of　low　index　planes　and　the　atomic　attachment　of　P　phase　with　matrix　were　analyzed　in　detail　to　investigate　the　atomic　scale　structure　of　the　fast-growing　semi-coherent　interface　and　its　effects　on　precipitate　growth.　Finally,　the　nucleation　of　P　phase　was　discussed.

关键词：

P phase Orientation relationships Electron microscopy Superalloy Interface structure

作者机构：

[ 1 ] [Zhang, Youjian]Shandong Univ, Minist Educ, Sch Mat Sci & Engn, Key Lab Liquid Solid Struct Evolut & Proc Mat, 17923 Jingshi Rd, Jinan 250061, Shandong, Peoples R China
[ 2 ] [Zhang, Jianxin]Shandong Univ, Minist Educ, Sch Mat Sci & Engn, Key Lab Liquid Solid Struct Evolut & Proc Mat, 17923 Jingshi Rd, Jinan 250061, Shandong, Peoples R China
[ 3 ] [Li, Pan]Shandong Univ, Minist Educ, Sch Mat Sci & Engn, Key Lab Liquid Solid Struct Evolut & Proc Mat, 17923 Jingshi Rd, Jinan 250061, Shandong, Peoples R China
[ 4 ] [Jin, Huixin]Shandong Univ, Minist Educ, Sch Mat Sci & Engn, Key Lab Liquid Solid Struct Evolut & Proc Mat, 17923 Jingshi Rd, Jinan 250061, Shandong, Peoples R China
[ 5 ] [Zhang, Wenyang]Shandong Univ, Minist Educ, Sch Mat Sci & Engn, Key Lab Liquid Solid Struct Evolut & Proc Mat, 17923 Jingshi Rd, Jinan 250061, Shandong, Peoples R China
[ 6 ] [Wang, Zihan]Shandong Univ, Minist Educ, Sch Mat Sci & Engn, Key Lab Liquid Solid Struct Evolut & Proc Mat, 17923 Jingshi Rd, Jinan 250061, Shandong, Peoples R China
[ 7 ] [Mao, Shengcheng]Beijing Univ Technol, Beijing Key Lab Microstruct & Property Adv Mat, Beijing 100024, Peoples R China

通讯作者信息：

毛圣成
[Zhang, Jianxin]Shandong Univ, Minist Educ, Sch Mat Sci & Engn, Key Lab Liquid Solid Struct Evolut & Proc Mat, 17923 Jingshi Rd, Jinan 250061, Shandong, Peoples R China;;[Mao, Shengcheng]Beijing Univ Technol, Beijing Key Lab Microstruct & Property Adv Mat, Beijing 100024, Peoples R China

电子邮件地址：

jianxin@sdu.edu.cn |
scmao@bjut.edu.cn

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